CVE-2024-39293

In the Linux kernel, the following vulnerability has been resolved:
Revert “xsk: Support redirect to any socket bound to the same umem”
This reverts commit 2863d665ea41282379f108e4da6c8a2366ba66db.
This patch introduced a potential kernel crash when multiple napi instances
redirect to the same AF_XDP socket. By removing the queue_index check, it
is
possible for multiple napi instances to access the Rx ring at the same
time,
which will result in a corrupted ring state which can lead to a crash when
flushing the rings in __xsk_flush(). This can happen when the linked list
of
sockets to flush gets corrupted by concurrent accesses. A quick and small
fix
is not possible, so let us revert this for now.